Buggy code:
public static final Integer INVITED_JOIN_TEAM_WAY = 1 ; public static final Integer MAX_TEAM_COUNT_OF_A_USER = 6 ; public static final String DEFAULT_TEAM_LOGO_PATH = "//upload//team_default_logo.png" ; public static final String QUIT_TEAM_MASSAGE_FORMAT = "用户%s在%s退出球队%s" ; public static final String APPLY_JOIN_TEAM_MASSAGE_FORMAT = "用户%s于%s申请加入球队%s" ; public static final String INVITE_JOIN_TEAM_MASSAGE_FORMAT = "用户%s于%s邀请你加入球队%s" ; private static final String [ ] DATE_PATTERNS = new String [ ] { "yyyyMMddHHmmssSSS" , "yyyy-MM-dd<seq2seq4repair_space>HH:mm:ss.SSS" , "yyyyMMdd'T'HHmmssSSSZ" , "yyyy-MM-dd'T'HH:mm:ss.SSSZ" } ; private ApplicationContext applicationContext ; @ Autowired private QqzqTeamMapper qqzqTeamMapper ; @ Autowired private TeamDao teamDao ; @ Autowired private UserDao userDao ; @ Autowired private UserTeamRelDao userTeamRelDao ; @ Autowired private QqzqUserTeamRelMapper qqzqUserTeamRelMapper ; @ Autowired private QqzqActivityMapper qqzqActivityMapper ; @ Autowired private QqzqTeamRunningAccoutMapper qqzqTeamRunningAccoutMapper ; @ Autowired private QqzqMemberRunningAccoutMapper qqzqMemberRunningAccoutMapper ; @ Autowired private QqzqTeamAlbumMapper qqzqTeamAlbumMapper ; @ Autowired private UserService userService ; @ Autowired private ThreadPoolTaskExecutor updateNameTaskExecutor ; @ Autowired private AsychronizeNofityService asychronizeNofityService ; private boolean isExsit ( QqzqTeam team ) { } private boolean isMember ( Integer userId , Integer teamId ) { } @ Transactional public void create ( QqzqTeam team , String qqId ) { } @ Transactional public void createRule ( QqzqTeam team ) { } public int count ( String teamLeaderUserName , String teamName , Integer oftenCity , Integer oftenDistinct , String requestTimestamp ) { } public List < QqzqTeam > query ( String teamLeaderUserName , String teamName , Integer oftenCity , Integer oftenDistinct , String requestTimestamp , Integer offset , Integer limit ) { } public QqzqTeam get ( Integer id ) { } public int countMemberUsers ( Integer teamId ) { } @ Transactional public void update ( Integer teamId , QqzqTeam team , String subject ) { } @ Transactional public void updateTeamName ( final Integer teamId , final String teamName ) { } @ Transactional public void updateTeamLogo ( final Integer teamId , final String logoUrl ) { } public List < QqzqUser > getMemberUsers ( Integer teamId , Integer offset , Integer limit ) { } public List < QqzqUserTeamRel > getMembers ( Integer teamId ) { } public List < UserTeamRelDto > getMemberRels ( Integer teamId , Integer offset , Integer limit ) { } @ Transactional public void joinTeamInitiative ( final Integer teamId , final String subject ) { } @ Transactional public void joinTeamInvited ( final Integer teamId , final String applyerqqid , final String subject ) { } @ Transactional public void quitTeam ( final Integer teamId , final String subject ) { } @ Transactional public void removeTeamMember ( final Integer teamId , final Integer memberId , final String subject ) { } @ Transactional public void deleteTeam ( final Integer teamId , final String subject ) { if ( teamId == null ) { TeamService . LOGGER . warn ( "id<seq2seq4repair_space>is<seq2seq4repair_space>null<seq2seq4repair_space>when<seq2seq4repair_space>get<seq2seq4repair_space>team<seq2seq4repair_space>info" ) ; throw new IllegalArgumentException ( "Team<seq2seq4repair_space>id<seq2seq4repair_space>can<seq2seq4repair_space>not<seq2seq4repair_space>be<seq2seq4repair_space>null" ) ; } if ( ! ( SystemConfig . IS_TEST_ENV_CONFIG_FOR_TOKEN ) ) { if ( StringUtils . isBlank ( subject ) ) { throw new IllegalArgumentException ( "The<seq2seq4repair_space>subject<seq2seq4repair_space>can<seq2seq4repair_space>not<seq2seq4repair_space>be<seq2seq4repair_space>null" ) ; } } if ( ! ( this . isLeader ( teamId , subject ) ) ) { throw new IllegalArgumentException ( "解散球队只有队长能操作" ) ; } QqzqTeam team = this . get ( teamId ) ; if ( team == null ) { throw new IllegalArgumentException ( String . format ( "Can<seq2seq4repair_space>not<seq2seq4repair_space>find<seq2seq4repair_space>team<seq2seq4repair_space>with<seq2seq4repair_space>id<seq2seq4repair_space>[%d]" , teamId ) ) ; } List < QqzqUserTeamRel > members = this . getMembers ( teamId ) ; if ( ( members . size ( ) ) > 1 ) { throw new IllegalArgumentException ( String . format ( "Can<seq2seq4repair_space>not<seq2seq4repair_space>delete<seq2seq4repair_space>team[%d]<seq2seq4repair_space>because<seq2seq4repair_space>member<seq2seq4repair_space>count<seq2seq4repair_space>is<seq2seq4repair_space>great<seq2seq4repair_space>than<seq2seq4repair_space>1" , teamId ) ) ; } <START_BUG> if ( ( ( members . get ( 0 ) ) != null ) && ( ! ( members . get ( 0 ) . getUserid ( ) . equals ( subject ) ) ) ) { <END_BUG> throw new IllegalArgumentException ( String . format ( "Can<seq2seq4repair_space>not<seq2seq4repair_space>delete<seq2seq4repair_space>team[%d]<seq2seq4repair_space>because<seq2seq4repair_space>state<seq2seq4repair_space>is<seq2seq4repair_space>exception" , teamId ) ) ; } qqzqTeamMapper . deleteByPrimaryKey ( teamId ) ; QqzqUserTeamRelExample relExample = new QqzqUserTeamRelExample ( ) ; relExample . createCriteria ( ) . andTeamidEqualTo ( teamId ) ; qqzqUserTeamRelMapper . deleteByExample ( relExample ) ; try { IMEasemobService . deleteTeamChatGroup ( team . getHuanxinid ( ) ) ; } catch ( Exception e ) { TeamService . LOGGER . error ( ( "Delete<seq2seq4repair_space>team<seq2seq4repair_space>in<seq2seq4repair_space>easemob<seq2seq4repair_space>error<seq2seq4repair_space>!<seq2seq4repair_space>team<seq2seq4repair_space>id<seq2seq4repair_space>is<seq2seq4repair_space>" + teamId ) , e ) ; } } public Boolean isLeader ( Integer teamId , String QqId ) { } public List < QqzqUserTeamRel > queryOwnTeamWithJoined ( Integer qqId , String teamName ) { } public int countOwnTeamWithJoined ( Integer qqId ) { } public List < QqzqTeam > queryTeamByUser ( Integer userId ) { } @ Transactional public void createTeamBalance ( Integer teamId , QqzqTeam team , String subject ) { } @ Transactional public void deductTeamBalance ( Integer teamId , QqzqTeam team , String subject ) { } @ Transactional public void createMemberBalance ( Integer teamId , List < QqzqUserTeamRel > memberBalances , String subject ) { } @ Transactional public void deductMemberBalance ( Integer teamId , BigDecimal totalDeduction , List < QqzqUserTeamRel > memberBalances , String subject ) { } public int countTeamRunningAccout ( Integer teamid , String fromDate , String toDate , String requestTimestamp ) { } public List < QqzqTeamRunningAccout > queryTeamRunningAccout ( Integer teamid , String fromDate , String toDate , String requestTimestamp , Integer offset , Integer limit ) { } public int countMemberRunningAccout ( Integer teamId , Integer userId , String fromDate , String toDate , String requestTimestamp ) { } public List < QqzqMemberRunningAccout > queryMemberRunningAccout ( Integer teamId , Integer userId , String fromDate , String toDate , String requestTimestamp , Integer offset , Integer limit ) { } @ Transactional public void createTeamAlbum ( QqzqTeamAlbum teamAlbum , String qqId ) { } public List < QqzqTeamAlbum > queryTeamAlbum ( Integer teamId , Integer publisherQuanquanId , String requestTimestamp , Integer offset , Integer limit ) { } public int countTeamAlbum ( Integer teamId , Integer publisherQuanquanId , String requestTimestamp ) { }

Fix:
if ( ( ( members . get ( 0 ) ) != null ) && ( ! ( String . valueOf ( members . get ( 0 ) . getUserid ( ) ) . equals ( subject ) ) ) ) {